By common consent, diesel oil (used to power the compression ignition engines, so dominant in agriculture) is a nonrenewable resource. Attempts to find or identify a diesel fuel substitute that could be used in conventional diesel engines have made some progress. In particular, the use of oils from renewable oilseeds has enjoyed some limited success in countries such as Austria, where generous tax remission is allowable on a fuel that is otherwise uneconomic.
Ferguson developed a hydraulically activated three-point hitch to which implements could be attached and which could lift and lower implements to the required working position. Ferguson also developed automatic control systems (draft, position) which greatly enhanced the performance of the equipment. Draft control is a system whereby the drawbar pull can be maintained at a constant level by automatically adjusting the position of the implement (e.g. plow) in response to variations in draft (e.g. soil resistance).

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By common consent, diesel oil (used to power the compression ignition engines, so dominant in agriculture) is a nonrenewable resource. Attempts to find or identify a diesel fuel substitute that could be used in conventional diesel engines have made some progress. In particular, the use of oils from renewable oilseeds has enjoyed some limited success in countries such as Austria, where generous tax remission is allowable on a fuel that is otherwise uneconomic.
Ferguson developed a hydraulically activated three-point hitch to which implements could be attached and which could lift and lower implements to the required working position. Ferguson also developed automatic control systems (draft, position) which greatly enhanced the performance of the equipment. Draft control is a system whereby the drawbar pull can be maintained at a constant level by automatically adjusting the position of the implement (e.g. plow) in response to variations in draft (e.g. soil resistance).

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